Musical tone control apparatus



FIG. 1 is a top, front, right side perspective view of musical tone control apparatus showing my new design;

FIG. 2 is a top rear, left side perspective view of musical tone control apparatus showing my new desing;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear view thereof. 

The ornamental design for musical tone control apparatus, as shown. 